#include <stdio.h>

#define elog    elog_start(), elog_finish

int elog_start()
{
	printf ("nihao\n");
}

int elog_finish()
{
	printf ("nihao1\n");
}

int main ()
{
	elog();
	elog_start(), elog_finish(), 1+2;
	return 0;
}

